Euchromia magna is a moth of the subfamily Arctiinae. It was described by Charles Swinhoe in 1891. It is found in India and Sri Lanka.[1]
Hindwings with vein 3 and 4 stalked. Body blue black. Antennae with white distal part. Abdomen with two yellow bands. Forewing with a small sub-basal, two large medial, one sub-apical and two sub-marginal hyaline spots. Hindwings with a large basal hyaline patch crossed by the sub-costal and median veins and a sub-marginal spot crossed by veins 4 and 6.[2]
. George Hampson . 1892 . The Fauna of British India, Including Ceylon and Burma: Moths Volume I . Taylor and Francis . Biodiversity Heritage Library.